Oxycodone is a single opioid drug. Percocet is a brand-name combination product containing oxycodone plus paracetamol. Every Percocet contains oxycodone; oxycodone on its own is not Percocet, and the difference matters because of the second ingredient.
The core difference
- oxycodone — one opioid substance, sold alone under several names.
- Percocet — a brand of combination tablet: oxycodone plus paracetamol, known as acetaminophen in the US.
Why the second ingredient is the important part
Combination products pair an opioid with a non-opioid painkiller. The clinically significant consequence is that the non-opioid sets a hard daily ceiling — paracetamol has a well-defined limit above which liver damage occurs, and exceeding it is a leading cause of acute liver failure.
This is the practical reason the distinction is worth understanding rather than a naming curiosity: with a single-ingredient drug the limit is one thing, and with a combination there are two limits, one of which is unrelated to the opioid.
The naming landscape
- Oxycodone alone — sold as OxyContin in an extended-release form, and as Roxicodone and others immediate-release.
- Oxycodone with paracetamol — Percocet, Endocet and generic equivalents.
- Hydrocodone with paracetamol — Vicodin, Norco. A different opioid in the same kind of combination.
Oxycodone and OxyContin are not synonyms either
A frequent confusion. OxyContin is a brand of extended-release oxycodone, designed to release over hours. The release mechanism, and its defeat, is central to the documented history of opioid misuse in North America — which is why the brand name is far more widely recognised than the generic.
Where the names come from
Oxycodone is built from its chemistry — it is a semi-synthetic derivative of thebaine, an alkaloid of the opium poppy. The -one ending marks a ketone group, and the same pattern appears in hydrocodone and oxymorphone.
Percocet is a coined trade name, blending elements of the manufacturer's naming series with the paracetamol component.
This page explains the words, not medication. Anything about a prescription is a matter for a doctor or pharmacist.
Frequently asked questions
Is Percocet the same as oxycodone?
No. Percocet is a brand of combination tablet containing oxycodone plus paracetamol. Oxycodone on its own is a single drug.
Why does the second ingredient matter?
Because paracetamol has a hard daily ceiling above which liver damage occurs, so a combination product carries a limit unrelated to the opioid.
Is OxyContin the same as oxycodone?
OxyContin is a brand of extended-release oxycodone. The drug is the same; the release mechanism is what the brand names.